Revenue Recognition - Deferred Revenue for Long-term (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue, Remaining Performance Obligation [Roll Forward]
Beginning balance - January 1	$ 11,082	$ 12,486
Acquired deferred revenue (Note 2)	11,125	0
Recognition of deferred revenue	(19,229)	(11,005)
Deferral of revenue	17,068	9,601
Ending balance - December 31	$ 20,046	$ 11,082